02279nas a2200229   4500008004100000022001400041245011500055210006900170260000800239300001200247490000800259520149000267653002401757653001801781653001601799653001401815653002501829100002201854700002001876700002401896856012901920       2022                        eng d  a0263-876200aIntensified hydrodynamic cavitation using vortex flow based cavitating device for degradation of ciprofloxacin0 aIntensified hydrodynamic cavitation using vortex flow based cavi  cNOV  a623-6320 v1873 a<p>
	The present work, for the first time, establishes degradation behavior of ciprofloxacin (CIP), a widely used fluoroquinolone group of antibiotics, using vortex flow based hydro-dynamic cavitation (HC) for low to high concentrations of CIP (10 and 100 mg/L). Effect of pressure on the degradation of CIP and TOC reduction was investigated on pilot plant scale (capacity 1 m3/h). Process intensifications using aeration as well as hydrogen per-oxide (H2O2) were also investigated. While aeration did not yield any significant en-hancement, process intensification using H2O2 resulted in similar to 200% enhancement in the CIP degradation as compared to HC alone. Excellent degradations, to an extent of 79 &amp; 95%, were achieved corresponding to high cavitational yields of 7.2 x 10-4 mg/J and 86.8 x 10-4 mg/J for CIP concentrations of 10 and 100 mg/L respectively using the process intensified approach of HC and H2O2, not reported so far for cavitating devices without moving ele-ments. The developed methodology demonstrated 4-7 times improvement in per-pass degradation and low cost with high efficiency compared to the conventional cavitation. The results clearly highlight utility of the process intensified approach using H2O2 for the degradation of CIP even at high concentrations, specifically important for pharmaceutical industries requiring zero liquid discharge norms.(c) 2022 Institution of Chemical Engineers. Published by Elsevier Ltd. All rights reserved.</p>
10aAntibiotics removal10aciprofloxacin10aDegradation10aOxidation10aWastewater treatment1 aPatil, Pravin, B.1 aThanekar, Pooja1 aBhandari, Vinay, M.  uhttps://library.ncl.res.in/content/intensified-hydrodynamic-cavitation-using-vortex-flow-based-cavitating-device-degradation02273nas a2200229   4500008004100000022001400041245014000055210006900195260000800264300001200272490000800284520146600292653002301758653001601781653001401797653001501811653002501826100001701851700002001868700002401888856013101912       2023                        eng d  a0263-876200aDual activity cavitation reactors for increased efficacy in degradation of refractory pollutants-A case study on cephalexin degradation0 aDual activity cavitation reactors for increased efficacy in degr  cAPR  a310-3220 v1923 a<p>
	The present work discloses a new form of cavitation processes using reactors of dual activity for increased efficiency. A proof of concept is established for the degradation of a refractory pollutant-cephalexin using both conventional and dual function cavitation reactors for the first time using acoustic and hydrodynamic cavitation (HC). A vortex diode as a cavitating device was employed for HC using aluminium as a non-catalytic and copper as dual function device for providing additional catalytic effect. The process in-tensification using hydrogen peroxide (H2O2) coupled with the dual function devices was highly effective. A negligible degradation with only HC and 81% for HC coupled with H2O2 in 60 min for Al-vortex diode compared to 100% degradation in only 5 min for the copper device clearly demonstrates the order of magnitude enhancements establishing dual function due to catalytic activity. Also, pH modification (pH 11) yields enhancement over 300% for Cu-vortex diode. The use of dual function reactors drastically reduces H2O2 do-sage. The overall enhancements in the per pass degradation and cavitation yields were huge, similar to 3000% and 1450% respectively, highlighting the potential of the dual function ca-vitation reactors in real-life applications, not just for increased efficiencies but also for significantly reduced costs.(c) 2023 Institution of Chemical Engineers. Published by Elsevier Ltd. All rights reserved.</p>
10aAdvanced oxidation10aDegradation10apollution10aTechnology10aWastewater treatment1 aDixit, Divya1 aThanekar, Pooja1 aBhandari, Vinay, M.  uhttps://library.ncl.res.in/content/dual-activity-cavitation-reactors-increased-efficacy-degradation-refractory-pollutants-case